About to mod my virgin 318

Should be like night and day :D.

Any 4bbl open element air cleaner should work fine, including the Eddy.

I'm not positive you'll need it with the two barrel stuff, But this adapter may help you line up the linkage, although you will probably have to play with/fab the length, especially your kickdown/throttle pressure arm.........

http://www.summitracing.com/parts/HLY-20-7/